<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div.outer{
            width: 1090px;
            height: 355px;
            
            margin: 0 auto;
        }
        div.outer div{
            width: 355px;/*33.33333%*/
            height: 355px;
            
            float: left;
            
        }
        div.outer div.left{
            
            margin-right: 12.5px;
            
        }
        div.outer div.right{
            
            margin-left: 12.5px;
        }
        div.outer img{
            width: 355px;
            height: 355px;
        }
    </style>
</head>
<body>
    <div class="outer">
        <div class="left">
            <img src="./center-left.jpg" alt="">
        </div>
        <div class="center">
            <img src="./center.jpg" alt="">
        </div>
        <div class="right">
            <img src="./center-right.jpg" alt="">
        </div>
    </div>
</body>
</html>